National Distributed Energy Resources Grid Connection Guidelines. Technical Guidelines for Basic Micro EG Connections

Transcription

1 National Distributed Energy Resources Grid Connection Guidelines Technical Guidelines for Basic Micro EG Connections ENA DOC

2 DISCLAIMER This document refers to various standards, guidelines, calculations, legal requirements, technical details and other information. Over time, changes in Australian Standards, industry standards and legislative requirements, as well as technological advances and other factors relevant to the information contained in this document, may affect the accuracy of the information contained in this document. Accordingly, caution should be exercised in relation to the use of the information in this document. Energy Networks Australia accepts no responsibility for the accuracy of any information contained in this document or the consequences of any person relying on such information. Correspondence should be addressed to Energy Networks Australia at COPYRIGHT Energy Networks Australia 2018 All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the Association. ISBN: Energy Networks Association Limited Trading as Energy Networks Australia ABN Unit 5, Level 12, 385 Bourke Street Melbourne VIC 3000 P: E: info@energynetworks.com.au W: ENA DOC XXX-YYYY

3 Contents Tables 1 Key Information 2 Documents of Energy Networks Australia 3 Definitions 4 Abbreviations 6 Foreword 7 About the National DER Connection Guidelines 8 Preparing Basic Micro EG Connection Technical Requirements 11 Introduction 11 Definitions and Abbreviations 12 Relevant Rules, Regulations, Standards and Codes 13 Technical Requirements 14 Fees and Charges 19 Testing and Commissioning 19 Operations and Maintenance 20 Appendix A: Deviations from the National DER Connection Guidelines 21 Appendix B: Connection Arrangement Requirements 22 Appendix C: Model Standing Offer 23 Appendix D: Static Data and Information 24 Energy Networks Australia Unit 5, Level 12, 385 Bourke Street Melbourne VIC 3000 P: E: info@energynetworks.com.au Energy Networks Association T/A Energy Networks Australia ABN:

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5 Tables Table 1 Table of Deviations from National DER Connection Guidelines 21 ENA DOC

6 Key Information Document Category Functional Domain Guideline Connections Designation ENA DOC Version No 1.0 Title Development Leader Working Group Foundation Work Filing Details National Distributed Energy Resources Grid Connection Guidelines Technical Guidelines for Basic Micro EG Connections CutlerMerz Zahra Jabiri, Laurie Curro, Dennis Stanley and other representatives. A Framework and Principles Guideline was produced, to guide the development of this and other connection guidelines. Energy Networks Australia (Website) Review Period December ENA DOC

7 Documents of Energy Networks Australia History of Energy Networks Australia Energy Networks Australia is the peak national body representing Australia s gas distribution and electricity transmission and distribution companies. Established in its current form in 2004 it has a long history of industry representation, operating under different names over the years to reflect the sector transformation. With more than 16 million customer connections across the nation, Australia s energy networks provide the final step in the safe, reliable delivery of gas and electricity to virtually every home, business and industry in the country. Documents Part of the role of Energy Networks Australia is the development and management of support material such as codes, specifications, guidelines and handbooks to support the energy industry and members of the public in the interpretation and application of legislation and standards. All documents are written in collaboration with the industry through working groups and general consultation with the Members of Energy Networks Australia. It should be noted that legislation and standards may alter between editions of Energy Networks Australia documents, and they will always take precedence. As such, all document users must be aware of the current regulatory environment. ENA DOC

8 Definitions 1 Basic micro embedded generation connection Central protection Embedded generating unit Embedded generating system Distributed Energy Resources Energy storage system Generating unit Generation Generator Inverter energy system Low voltage Medium voltage/ High voltage Micro embedded generation connection A connection between a distribution network and a retail customer s premises for a micro embedded generating unit, for which a model standing offer is in place or an equivalent model offer is in place in jurisdictions not subject to Chapter 5A of the National Electricity Rules Central protection is the protection contemplated by AS/NZS 4777 (grid connection of energy systems via inverters) installed to perform the functions of: coordinating multiple inverter energy system installations at one site, providing protection for the entire inverter energy system installation and islanding protection to the connected grid as well as preserving safety of grid personnel and the general public A generating unit connected within a distribution network and not having direct access to the transmission network A system comprising of multiple embedded generating units Power generation or storage units that are connected directly to the distribution network A system comprising one or more batteries that store electricity generated by distributed energy resources or directly from the grid, and that can discharge the electricity to loads The plant used in the production of electricity and all related equipment essential to its functioning as a single entity. The production of electrical power by converting another form of energy in a generating unit A person who owns, operates or controls a generating unit A system comprising one or more inverters that convert direct current to alternating current The mains voltages as most commonly used in any given network by domestic and light industrial and commercial consumers (typically 230V) Any voltage greater than 1kVAC Means a connection between an embedded generating unit and a distribution network of the kind contemplated by Australian Standard AS 4777 (Grid connection of energy systems via inverters) currently up to 200kVA 1 Definitions in italics are consistent with the definitions under the National Electricity Rules 4 ENA DOC

9 Market generating unit Model standing offer Proponent Registered generator Site generation limit Small generation aggregator Small registered generator Standard connection Single Wire Earth Return Technical requirements document A generating unit whose generation is not purchased in its entirety by a retailer (and receives payment for generation through the National Electricity Market or Wholesale Electricity Market) A document approved by the Australian Energy Regulator as a model standing offer to provide basic micro embedded generation connection services or standard connection services which contains (amongst other things) the safety and technical requirements to be complied with by the proponent. This definition also applies to an equivalent model offer for jurisdictions not subject to Chapter 5A of the National Electricity Rules A person proposing to become a generator (the relevant owner, operator or controller of the generating unit (or their agent)) A person who owns, operates or controls a generating unit that is connected to, or who otherwise supplies electricity to, a transmission or distribution system and who is registered by the Australian Energy Market Operator as a Generator under Chapter 2 of the National Electricity Rules The generation threshold that the embedded generation system cannot exceed, measured downstream of the connection point A person who has classified one or more small generating units as a market generating unit A generator who elects to register a generator with the Australian Energy Market Operator as a market generating unit who would otherwise be entitled to an exemption to register based on size A connection service (other than a basic micro embedded generation connection service) for a particular class (or sub-class) of connection applicant and for which an Australian Energy Regulator approved model standing offer is in place or for which an equivalent model offer is in place in jurisdictions not subject to Chapter 5A of the National Electricity Rules Parts of the electrical distribution network that use a single live conductor to supply single-phase or split-phase electric power with higher network impedances, and with distribution supplying low voltages to premises The document produced by each Distribution Network Service Provider setting out their requirements for proponents to enable a grid connection, to which these guidelines apply ENA DOC

10 Abbreviations AEMC AEMO AER AS/NZS CBD CEC DER DNSP EG ESS HV IEC IES LV MV NEM NER NMI SWER SWIS WEM Australian Energy Market Commission Australian Energy Market Operator Australian Energy Regulator A jointly developed Australian and New Zealand Standard Central Business District Clean Energy Council Distributed Energy Resources Distribution Network Service Provider Embedded Generation or Embedded Generating Energy Storage System High Voltage International Electrotechnical Commission Inverter Energy System Low Voltage Medium Voltage National Electricity Market National Electricity Rules National Metering Identifier Single Wire Earth Return South West Interconnected System Wholesale Electricity Market servicing the SWIS 6 ENA DOC

11 Foreword The electricity industry in Australia is undergoing a transformation from a centralised system of generation transmission and distribution, dominated by relatively few participants, to a system of increasing decentralisation. The transformation is being largely driven by technological change in renewables and DER, enabling a broader range of stakeholders, including retail customers, to connect to and participate in existing and emerging energy markets. As a result, network businesses are transforming from network service providers, facilitating one-way flow, to a customer connection provider, facilitating two-way flows between multiple distributed generating units and loads. The rate of transformation varies between networks due to the rate of uptake of DER and differing characteristics of network types. Each network has responded to these challenges independently, resulting in a range of technical requirements and connection processes which, although consistent with regulatory requirements, result in some inconsistencies between networks and a lack of clarity for proponents. These issues have been identified as a major concern by stakeholders in numerous industry reports and reviews including the CSIRO/Energy Networks Australia s Energy Network Transformation Roadmap 2, and the Clean Energy Council s Future Proofing Australia s Distribution Networks 3. These National DER Connection Guidelines have been developed in response to the needs identified in the abovementioned studies. Energy Networks Australia, in partnership with the AEMO, is separately undertaking consultation on its Open Energy Networks project. Open Energy Networks proposes options for improving the electricity system to ensure household solar PV and ESS work in harmony and deliver the most value for all customers. The consultation has identified the need for common standards and protocols for active DER but is yet to develop specific technical requirements. It is envisaged that the outcomes of the Open Energy Networks consultation will be incorporated in future iterations of these National DER Connection Guidelines ENA DOC

12 About the National DER Connection Guidelines The National DER Connection Guidelines set out the framework, principles, approach and technical settings for Australian DNSPs to adopt in the development and application of their technical requirements for grid connection of DER. The ultimate aim of the guidelines is to facilitate the efficient integration of DER into the grid from the perspective of networks, renewable energy proponents and Australia s electricity system more generally. In preparing these guidelines, Energy Networks Australia has consulted broadly with industry including: the AEMO, the AEMC, state and federal governments and the Clean Energy Council as well as each of the fourteen DNSPs across Australia, who are our member organisations. Objectives of the Guidelines The objectives of the guidelines are to: 1. Give rise to clear, complete and accessible technical requirements for grid connection for each DNSP 2. Provide for a level of consistency between DNSPs technical requirements for grid connection in terms of both structure of presentation and the requirements themselves 3. Ensure that DNSPs technical requirements give regard to the long-term interest of consumers by appropriately balancing the economic benefits, costs and risks that the requirements impose upon their network, proponents and Australia s electricity system more generally; consistent with the National Electricity Objective to: Promote efficient investment in, and efficient operation and use of, electricity services for the long-term interests of consumers of electricity with respect to: price, quality, safety and reliability and security of supply of electricity and; the reliability, safety and security of the national electricity system" 4. Establish a platform for DNSPs to develop common standards and protocols for future management of active DER. Structure of Guidelines The guidelines are separated into four distinct documents: 1. Framework and Principles guideline Specifies the number, scope and structure of the technical requirements documents which all DNSPs shall develop as well as the principles DNSPs shall adopt in setting technical requirements 2. Basic micro EG connection technical guidelines (this document) Specifies how DNSPs shall develop and apply technical requirements for the connection of a micro EG unit with a total system capacity greater than or equal to 5 kva for single-phase IES (excluding ESS), and less than or equal to a total system capacity of 30 kva for three-phase IES (excluding ESS) to an LV distribution network 8 ENA DOC

13 3. LV EG connection technical guidelines Specifies how DNSPs shall develop and apply technical requirements for the connection of an EG unit (which is not a basic micro EG unit) to a LV distribution network 4. MV/HV EG connection technical guidelines Specifies how DNSPs shall develop and apply technical requirements for the connection of an EG unit (which is not a basic micro EG unit or an LV EG unit) to a MV/HV distribution network, for which the generator is not required to be registered in the NEM ( 5MVA) or WEM ( 10MVA) or is within other jurisdictions and is 5MVA 4. How to Comply with the Guidelines Compliance to the Energy Networks Australia DER Connection Guidelines is not legally required by DNSPs, however, all DNSPs have communicated an intention to adopt the requirements of the guidelines. To be deemed to comply with the guidelines, DNSPs shall: Structure their technical requirements documents consistent with the framework and principles set out in the Framework and Principles guideline Develop and apply technical requirements set out in the technical guidelines as relevant. Where DNSPs choose to adopt an alternative setting, structure or approach, they shall still be deemed to comply so long as the deviation is set out and justified. Justification shall include: That the alternative setting is required to respond to a jurisdictional legislative or regulatory requirement and/or That the alternative setting promotes improved benefits to Australia s electricity system (in terms of both network and proponent benefits, risks and costs). Each deviation shall be listed in a table within the appendix of the DNSPs technical requirements document, consistent with the format provided in Appendix A: Deviations from the National DER Connection Guidelines. The full justification shall be published separately on the DNSP s website and hyperlinked from the deviation table where appropriate. Terminology In these guidelines the following terminology is used: The word shall indicates that adopting the setting or approach is mandatory in order for DNSPs to be deemed to comply with these guidelines The word may indicates an optional setting or approach that DNSPs shall consider. DNSPs will still be deemed to comply with the guidelines if they do not adopt that setting. 4 Note that the guidelines still apply to generators who elect to register with AEMO as either a small registered generator or a small generation aggregator operating individual generating units of less than 5MW. ENA DOC

14 Relationship to Other Documents The guidelines are intended to be consistent with and to complement existing legislation and regulations. To the extent that the application of these guidelines results in any inconsistency between existing legislation and regulations and DNSPs technical requirements, existing legislation and regulations shall prevail. The implications of any inconsistency on DNSP s ability to comply with these guidelines shall be set out within a table of deviations as per Appendix A: Deviations from the National DER Connection Guidelines. These guidelines are also intended to be consistent with relevant Australian/International Standards and Industry Codes. In some cases, these guidelines require DNSPs to apply additional requirements or additional specificity beyond Australian/International Standards and Industry Codes. Any inconsistency shall be interpreted as deliberate and shall not be used as justification for a deviation. 10 ENA DOC

15 Preparing Basic Micro EG Connection Technical Requirements DNSPs shall produce a technical requirements document for basic micro EG connections that shall follow the structure and content detailed in these guidelines. The DNSP shall include the terms Basic Micro EG Connection Technical Requirements in their key search terminology for their technical requirements document. The DNSP document title shall include the terms Basic Micro EG Connection Technical Requirements. The document may include other terms, where required for consistency with the DNSP s document classification system. Introduction This section shall include an introduction to the DNSP s technical requirements document that provides proponents with an overview of the technical requirements for the equipment and installation of basic micro EG connections to the DNSP s LV network. The introduction shall include: 1. The definition of a basic micro EG connection, consistent with the definition provided within the Framework and Principles guideline being: a micro EG system with a total system capacity greater than or equal to 5 kva for a single-phase IES (excluding ESS) network connection, and a total system capacity less than or equal to 30 kva for a three-phase IES (excluding ESS) network connection that is: a. intended to be connected to and capable of operating in parallel with any part of the LV distribution network b. involving minimal or no augmentation of the distribution network c. meeting all other technical requirements set out in this document 2. The purpose of the DNSP s technical requirements document being: to provide proponents of basic micro EG connections information about their obligations for connection to and interfacing with the LV distribution network 3. An outline of the scope of connections to which the technical requirements document applies, being new connections of basic micro EG systems or modifications to existing basic micro EG systems, where the basic micro EG system consists of IES, ESS or a combination of both 4. An outline of the scope of systems to which the technical requirements document does NOT apply, being: a. EG units covered by the DNSP s LV EG Connection Technical Requirements b. EG units covered by the DNSP s MV/HV EG Connection Technical Requirements c. Electric vehicles, unless the on-board battery storage system is capable of exporting to the LV network (in which case the requirements shall apply) ENA DOC

16 d. DER systems that do not generate electricity, including demand response/demand management systems, unless they impact on the ability of the basic micro EG system to meet the technical requirements 5. The general obligations of proponents, including: a. The obligation to comply with the technical requirements as well as relevant national standards, industry codes, legislation and regulations. In the event of inconsistency, an indication of which instrument shall prevail, being legislation and regulations, followed by the technical requirements, followed by national standards and industry codes b. The obligation to not connect additional inverters, make modifications or install additional micro EG units, including ESS, without prior written agreement from the DNSP c. The obligation to comply with the DNSP s model standing offer d. The obligation to meet the requirements in the design, installation and operation of the basic micro EG system 6. A statement of acknowledgement from the DNSP of their obligations to ensure the safe and reliable operation of the distribution system for operating personnel, customers and the general public 7. A statement that the technical requirements comply with the National DER Connection Guidelines for Basic Micro EG Connections, with the exception of the deviations presented in Appendix A: Deviations from the National DER Connection Guidelines. Definitions and Abbreviations 2.1 Definitions This section shall provide a tabulated list of definitions for any technical or industry terms used throughout the technical requirements document. The definitions shall be consistent with the definitions provided within the National DER Connections Guidelines (including these technical guidelines and the Framework and Principles guideline) as relevant. 2.2 Abbreviations This section shall provide a tabulated list of all abbreviations used throughout the technical requirements document. The abbreviations shall be consistent with the abbreviations provided within the National DER Connections Guidelines (including these technical guidelines and the Framework and Principles guideline) as relevant. 2.3 Terminology DNSPs shall outline how instructional terms are to be interpreted, being: 1. The word shall indicates a mandatory requirement 2. The word may indicates a requirement that may be mandatorily imposed on the proponent 3. The word should indicates a recommendation that will not be mandatorily imposed on the proponent. 12 ENA DOC

17 2.3.1 Subcategories DNSPs shall advise proponents of the subcategories for which different technical settings may apply, being: 1. Single-phase basic micro EG connection Any basic micro EG system with a system capacity greater than or equal to 5 kva for a single-phase IES (excluding ESS) network connection meeting all technical requirements for basic micro EG connections set out in the DNSP's technical requirements document 2. Three-phase basic micro EG connection Any basic micro EG system with a system capacity less than or equal to 30 kva for a three-phase IES (excluding ESS) network connection meeting all technical requirements for basic micro EG connections set out in the DNSP s technical requirements document 3. Non-standard basic micro EG connection Any basic micro EG system connecting to a non-standard part of the network including (but not limited to) SWER networks, isolated networks, and CBD networks. This section shall also provide a hyperlink or website reference to a map, list of postcodes, or equivalent, which allows proponents to geographically identify whether their connection is to a non-standard network. This section shall also provide contact details in case there is any doubt as to which subcategory applies. This section shall specify that the technical requirements set out in these guidelines should be interpreted as applying to all subcategories of basic micro EG connections unless otherwise specified. Relevant Rules, Regulations, Standards and Codes 3.1 Standards and Codes This section shall provide a list of all the Australian and international standards and industry codes which shall apply to the design, manufacture, installation, testing and commissioning, and operation and maintenance of all plant and equipment for basic micro EG connections to the distribution network. This section shall be consistent with the standards provided within the Framework and Principles guideline and shall only include those relevant to the DNSP s jurisdiction. This section shall also state that in the event of any inconsistency between Australian and international standards and industry codes and the DNSP technical requirements, the DNSP technical requirements shall prevail. 3.2 Legislation and Regulation This section shall provide a list of all the relevant legislation and regulations which shall apply to the design, manufacture, installation, testing and commissioning, and operations and maintenance of all plant and equipment for basic micro EG connections to the distribution network. ENA DOC

18 This section shall be consistent with the legislation and regulation provided within the Framework and Principles guideline and shall only include those relevant to the DNSP s jurisdiction. This section shall also state that in the event of any inconsistency between legislation and regulations and the DNSP technical requirements, the legislation and regulation shall prevail. Technical Requirements 4.1 Labelling and Signage This section shall specify that the labels and signs on the installation, including cables, shall be as per AS/NZS , AS/NZS 3000 and AS/NZS In addition, DNSPs may provide further specificity, including but not limited to: 1. Additional descriptors of the generating unit 2. Details as to where within the installation and/or the DNSP s equipment the labelling and signage should be placed. Any requirements which are additional to AS/NZS , AS/NZS 3000 and AS/NZS 5033 shall be clearly stated as such. 4.2 Maximum System Capacity This section shall specify the maximum system capacity of basic micro EG connections for each subcategory consistent with the below: 1. Single-phase basic micro EG connection For single-phase basic micro EG connections of IES (excluding ESS), the maximum system capacity shall be set to greater than or equal to 5 kva 2. Three-phase basic micro EG connection For three-phase basic micro EG connections of IES (excluding ESS), the maximum system capacity at the same connection point shall be set to less than or equal to 10 kva per phase 3. Non-standard basic micro EG connection For each type of non-standard network basic micro EG connections, a lower maximum system capacity may be specified. The lower maximum system capacity which applies to each type of non-standard network shall then be specified in this section. This section shall also specify how the system capacity for basic micro EG connections on different strata titles, but at the same network connection point (e.g. retirement villages), are to be treated. That is, whether they are to be treated as individual basic micro EG connections or whether the connection type is to be defined by the capacity at the connection point. Where the DNSP reduces the maximum system capacity setting from their current setting for any of the subcategories, they shall include this as a deviation in Appendix A and provide a justification accordingly. 4.3 Generation Control This section shall specify that basic micro EG connections require generation control. 14 ENA DOC

19 4.3.1 Export Limits at Connection Point This section shall specify the export limits of basic micro EG connections for each subcategory consistent with the below: 1. Single-phase basic micro EG connection For single-phase basic micro EG connections of IES (excluding ESS), the export limit shall be set to equal 5 kva at the connection point 2. Three-phase basic micro EG connection For three-phase basic micro EG connections of IES (excluding ESS), the export limit shall be set to equal 5 kva per phase with a balanced output with respect to its rating and a tolerance of no more than 5 kva unbalance between any phases as per AS/NZS at the connection point 3. Non-standard basic micro EG connection For non-standard basic micro EG connections, a lower export limit or an option that avoids network augmentation may be specified. The lower export limit which applies to each type of non-standard network shall then be specified in this section. This section may also specify additional generation control requirements. The export limit is to be interpreted as soft, consistent with the definition of soft export limits within AS/NZS This section shall specify that the export limit is to be interpreted by the proponent as a maximum. The ability of the proponent s basic micro EG system to export at the export limit is not guaranteed, but rather, it will depend upon network characteristics which change over time. This section shall describe those scenarios where output may need to be constrained including, but not limited to inverter power output where power quality response modes are in operation Site Generation Limit Downstream of Connection Point Where the DNSP adopts a site generation limit, this section shall specify the site generation limits of the basic micro EG connections for each subcategory consistent with the below: 1. Single-phase basic micro EG connection For single-phase basic micro EG connections of IES (excluding ESS), the site generation limit shall be set to equal 5 kva downstream of the connection point 2. Three-phase basic micro EG connection For three-phase basic micro EG connections of IES (excluding ESS), the site generation limit shall be set to equal 5 kva per phase with a balanced output with respect to its rating and a tolerance of no more than 5 kva unbalance between any phases as per AS/NZS downstream of the connection point 3. Non-standard basic micro EG connection For non-standard basic micro EG connections, a lower site generation limit downstream of the connection point or an option that avoids network augmentation may be specified. The lower site generation limit which applies to each type of non-standard network shall then be specified in this section. This section may also specify additional generation control requirements. Where the DNSP does not have any site generation limit requirements for basic micro EG connections, this section shall be retained, but noted as intentionally blank. ENA DOC

20 4.4 Inverter Energy System This section shall state the requirements that apply to IES, including that: 1. IES shall be tested by an authorised testing laboratory and be certified as being compliant with AS/NZS with an accreditation number 2. IES shall comprise of inverters that are registered with CEC as approved grid connect inverters 3. IES shall comprise of inverters that are tested by an authorised testing laboratory and certified as being compliant with IEC for active antiislanding protection as per AS/NZS IES shall comprise of inverters installed in compliance with AS/NZS IES shall comprise of inverters that have both volt-var and volt-watt response modes available. 4.5 Network Connection and Isolation This section shall specify that network connection and isolation requirements shall be as per AS/NZS In addition, this section may provide further specificity, including, but not limited to: 1. As a minimum, mechanical isolation shall be as per AS/NZS 3000 in that the isolator must always be readily accessible 2. Any means of isolation (where lockable) shall be able to be locked in the open position only. Any requirements that are additional to AS/NZS and AS/NZS 3000 shall be clearly stated as such. 4.6 Earthing This section shall specify that the earthing requirements shall include: 1. For IES, earthing requirements shall be as per AS/NZS and AS/NZS For ESS, earthing requirements shall be as per AS Protection This section shall specify that protection requirements shall be as per AS/NZS Inverter Integrated Protection This section shall specify that inverter integrated protection requirements shall be as per AS/NZS and AS/NZS for basic micro EG connections. This section shall further specify the passive anti-islanding requirements using voltage and frequency limits as per AS/NZS and shall reproduce Table 13 of AS/NZS DNSPs may depart from the set point values included in Table 13 of AS/NZS but should clearly nominate where this is the case. This section shall also specify active anti-islanding protection and its requirements as per AS/NZS ENA DOC

21 4.7.2 Central Protection This section shall specify that central protection where required, shall be as per Table 1 of AS/NZS Where central protection is required, this section shall reproduce the voltage and frequency set points as per Table 2 of AS/NZS Interlocking This section shall specify that where multiple single-phase inverters are connected to more than one phase, either of the following requirements will apply: 1. Single-phase inverters are to be interlocked and configured to operate as an integrated multi-phase inverter providing a balanced output that is no more than 5 kva between any phases as per AS/NZS OR 2. Phase balance protection as per Clause of AS/NZS is required, with exceptions outlined within Clause in AS/NZS Operating Voltage and Frequency This section shall specify that the operating voltage and frequency requirements can be found within the DNSP s technical requirements document in the section containing the Inverter Integrated Protection requirements. This section shall specify the nominated maximum voltage set point, V nom_max as per AS/NZS This section shall also specify the voltage rise requirement as per Appendix F.2 (i) of AS/NZS and any jurisdictional requirements for voltage rise calculation. 4.9 Metering This section shall not include any requirements for metering and shall be retained but noted as intentionally blank for DNSPs in jurisdictions subject to Chapter 7 of the NER. This section may include requirements for jurisdictional metering for DNSPs in jurisdictions which are not subject to Chapter 7 of the NER Power Quality IES Power Quality Response Modes This section shall specify either of the following inverter power quality response modes as per AS/NZS as being required: 1. Volt watt and volt var response modes specified in Clause and Clause of AS/NZS shall be enabled. This section shall provide additional specificity for the required response modes in terms of the volt response reference values, the volt watt response set-point values and the volt-var response set-point values consistent with the format in Tables 9 to 11 of AS/NZS OR 2. Fixed power factor mode and/or volt-var response modes specified in Clause and Clause of AS/NZS shall be enabled. If applicable, this ENA DOC

22 section shall also specify the circumstances under which power factor mode and/or reactive power mode shall be required. Further to this, this section shall provide additional specificity where applicable for the volt response reference values and the volt-var response set-point values consistent with the format in Tables 9 and 11 of AS/NZS Where volt-var response mode is required to be available and enabled, this section shall specify the ratio of reactive power to apparent power or the required fixed constant reactive power. This section may specify that where an additional basic micro EG unit is being added to a site with an existing basic micro EG connection that has legacy power quality settings, the DNSP may provide site-specific voltage response mode settings. This section shall specify whether there are ramping requirements of the IES as per AS/NZS , where a site generation limit is applied for generation control Communications Systems Where DNSPs have communications systems requirements for basic micro EG connections, this section shall specify the communications systems requirements that proponents should adopt for basic micro EG connections with reference to other requirements. That is, communications systems requirements may be recommended, but not imposed by the DNSP for basic micro EG connections. This section may specify communications systems requirements for non-standard basic micro EG connections. Where the DNSP does not yet have any communications systems requirements for basic micro EG connections, this section shall be retained, but noted as intentionally blank Data and Information Static Data and Information This section shall specify the static data and information that is required to be provided by the proponent to the DNSP as per Appendix D: Static Data and Information. This section may specify the format and method for transmitting static data but shall not impose any additional communications systems requirements Dynamic Data and Information This section may specify the requirements for transmitting dynamic data and information to the DNSP and any other bodies, which proponents shall adopt where communications systems are in place. Where the DNSP does not yet have any communications systems requirements for basic micro EG connections, this section shall be retained, but noted as intentionally blank Cybersecurity Where DNSPs have communications systems requirements for basic micro EG connections, this section shall specify the cybersecurity requirements including but not limited to: 18 ENA DOC

23 1. Ensuring monitoring and communications devices are in lockable enclosures 2. Protection and control from the network systems (firewalls) 3. Privilege settings and password protection 4. Limiting access to only that which is required to monitor the generating unit. This section may specify the relevant standards and documents relating to cybersecurity. Where the DNSP does not yet have any communications systems requirements for basic micro EG connections, this section shall be retained, but noted as intentionally blank Technical Studies This section shall state that no technical studies are required to be carried out by the proponent or at the proponent s expense to enable connection to the distribution network. This section may state that technical studies may be performed by the DNSP at the DNSP s cost, but that the outcomes of the technical studies shall not result in any change to the technical requirements for basic micro EG connections. Fees and Charges This section shall specify fees and charges applicable to proponents and any jurisdictional requirements including, but not limited to: 1. The types of connection fees that shall be applied 2. Any ongoing charges applicable regarding the installation and operation of the generating unit while maintaining the connection to the distribution network and how these are determined 3. The fees payable and/or how the fees are determined 4. How the fees are to be paid by the proponent. This section may provide hyperlinked website addresses with short descriptions where information is published separately on the DNSP s website. Testing and Commissioning This section shall state that testing and commissioning shall be undertaken in accordance with AS/NZS , AS/NZS 3000 and AS/NZS 5033 (where applicable), the equipment manufacturer s specifications, and the DNSP s technical requirements to demonstrate that the basic micro EG system meets the requirements of the connection agreement. This section shall specify that the tests shall be installation tests not type tests. ENA DOC

24 Operations and Maintenance This section shall state that basic micro EG systems should be operated and maintained to ensure compliance with their connection agreement and all legislation, codes, and/or other regulatory instruments at all times. This section shall state that the DNSP may inspect basic micro EG systems at any time at the DNSP s expense. This section may also describe the general expectations for operating and maintaining basic micro EG systems including, but not limited to: 1. Maintaining the electrical installation at the supply address in a safe condition 2. Ensuring that any changes to the electrical installation at the supply address are performed by an electrician lawfully permitted to do the work and that the customer holds a Certificate of Compliance issued in respect of any of the changes 3. Seeking DNSP approval prior to altering the connection in terms of an addition, upgrade, extension, expansion, augmentation or any other kind of alteration, including changing inverter settings. 4. How the DNSP proposes to respond to non-complying basic micro EG systems. 20 ENA DOC

25 Appendix A: Deviations from the National DER Connection Guidelines This appendix shall include a register of all deviations from this technical guideline in the format provided in Table 1. Table 1 Table of Deviations from National DER Connection Guidelines Section Description of deviation Type of deviation Justification {Section of this technical guideline document to which the deviation applies} {High level description of the deviation} {Nominates whether the deviation is to meet a jurisdictional requirement or is to promote improved benefits to Australia s electricity system} Justification {Either N/A where the deviation is to meet a jurisdictional requirement or provides link to justification documentation} ENA DOC

26 Appendix B: Connection Arrangement Requirements This appendix shall include: 1. Single line diagrams of the DNSP s preferred connection arrangements, and a range of other possible connection arrangements for integration of basic micro EG connection, showing: a) the connection point b) the point of common coupling c) the EG unit(s) d) load(s) e) meter(s) f) isolation device. 2. A sample schematic diagram of the protection system and control system relevant to the connection of a basic micro EG unit to the distribution network, showing the protection system and control system, and including: a) All relevant current circuits b) Relay potential circuits c) Alarm and monitoring circuits d) Back-up systems e) Parameters of protection and control system elements. 22 ENA DOC

27 Appendix C: Model Standing Offer In jurisdictions subject to Chapter 5A of the NER, this section shall include the AER approved model standing offer for basic micro EG connections. In jurisdictions not subject to Chapter 5A of the NER, this section shall include an equivalent model offer used as the basis to form a connection agreement with proponents of basic micro EG connections. The model standing offer (or equivalent) shall be entirely consistent with the technical requirements document. This section may provide hyperlinked website addresses with short descriptions where information is published separately on the DNSP s website. ENA DOC

28 Appendix D: Static Data and Information This appendix shall include the static data and information that is required to be provided by the proponent to the DNSP, including as a minimum: 1. NMI meter numbers (10 digit) 2. DER Devices a) Fuel source primary {renewable/biomass/waste; fossil; hydro; geothermal; solar; wave; wind; tidal; storage} b) Fuel source descriptor {as per appendix 8 of the NEM Generator registration guide} c) Make, model and manufacturer d) Maximum capacity (kw or MW) e) Storage capacity (kwh/mwh of available storage) f) Installer g) Whether the device is registered for ancillary service provision (Y/N) h) Whether the device is part of an aggregated control (Y/N) i) Whether the device is remotely controllable (Y/N) j) Compliance with Australian Standards 3. Inverter a) Make, model and manufacture b) Whether the installer has changed the inverter default manufacturer settings (Y/N) c) Maximum capacity (kw and kva) d) Date of installation e) Compliance with Australian Standards 4. Inverter enabled modes of operation a) Demand response modes enabled and enablement method b) Power quality modes {power response (frequency control); voltage response (voltage-watt or voltage-var); Q (reactive power), PF (power factor); standalone} 5. Trip settings a) Frequency trip settings {none, over-frequency, under frequency} b) Voltage trip settings {none, over-voltage, under-voltage} 24 ENA DOC

29 This has been prepared by Energy Networks Australia for the benefit of its members. A full list of member businesses is available at Energy Networks Association Limited Trading as Energy Networks Australia ABN Unit 5, Level 12, 385 Bourke Street Melbourne VIC 3000 P: E: info@energynetworks.com.au W: ENA DOC

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